The iMac Pro supposedly has an iPhone processor, too

Tucked inside the upcoming iMac Pro -- alongside 18 cores of Intel Xeon processors -- could be a stowaway chip that comes straight from the iPhone.

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The A10 Fusion processor belonged to last year's iPhone 7 and 7 Plus, and it's reportedly bringing always-on Siri voice search functionality -- aka "Hey, Siri" -- to the workhorse rig that Apple has called its "most powerful Mac ever." Over the weekend, iOS developer Guilherme Rambo tweeted a "confirmation" of Siri's presence on the iMac Pro, as spotted by The Verge and 9to5Mac.

In addition to always-on Siri, the borrowed iPhone chip could help the iMac Pro securely boot up before the other processors take over the heavy lifting, as engineer and Mac fan Pepijn Bruienne tweeted. The take-away? It could make the iMac Pro encryption faster, and make the whole platform more secure.